Frosting Ideas For Buttercream Haters?

ASo I'm new to fondant and all that and I'm going to make cupcakes for my sister'a birthday. She hates buttercream and I know you need something for the fondant to stick on to. Is there anything else I can use instead of buttercream?

Another vote for ganache. Remember you can do white chocolate ganache too, so it works with more flavors. Also, I believe some people put a thin layer of jam or preserves under the fondant instead of buttercream. I've never done it, but if you use the search box I bet you'll get a lot of posts about it.